laiulaw



(No Model.)

J. LAIDLAW. I GENTRIFUGAL LIQUID SEPARATOR.

,058; Patented Nov. 10

Uterine STATES Parent @rrrcn.

JOHN LAIDLA\\', OF GLASCHHV, SCOTLAND.

CENTRIFUGAL LIQUlD-SEPARATOR.

fiPEGIFIGATION forming part of LettersYatent No. 468,058, dated November10, 1891.

Application filed July 14, 1890. Serial No. 358,826. (No model.)Patented in England December 17, 1888, No. 18,384.

To aZZ whom it may concern.-

Be it known that I, J oHN. LAIDLAW, engineer, of the firm of *Watson,Laidlaw d (30., of 98 Dundas street, Kingston, Glasgow, in the county ofLanarlgNorth Britain, have invented Improvements in --UentrifugalMachines for Separating Cream from Milk, (for p which I have obtainedapatentih Great Britain, No. 18,389.,bearing date December 17, 1888,) ofwhich the following is a specification.

This invention relates to improvements in centrlt'ugal machines forseparating liquids, such as cream from milk, and has for its object torender such machines more efficient part, which is marked A, is offrusto-conical shape, with the smallest part of the cone uppermost. Thelower part of the drum B has an inclined face leading to thedischarge-lips and forms the skim-milk collecting and dischargechambers. The central portion of the diaphragm O has a boss D, the holein which is by preference conical to .iit upon the upper conical end ofthe spindle E. This boss is suificiently long to insure theseparating-drum being firmly carried on the said spindle.

Within the upper part A of the separatingdru n1 the milk-receiving cupIf is carried. This cup may be carried in several ways. In Fig. 1 it isshown as carried on the upper part oftheseparating-drum, While in Fig. 2it is shown asbeing carried on the upper part ofv the boss 1). Whicheverplan is adopted for carrying the cup the fitting between the cup and thedrum must be accurately made,

so that the cup and separating-drum shall re- Volvo together and in sucha manner that the cup may be removed when desired. The .milkceccivingcup F is made with its largest diameter at or near the top. It has aninwardly-projecting flange G at the top, and at a small distance belowthis flange in the side of the cup there is a row of small holes llbored completely through the cup, making a communication between the cupand the upper part of the separating-drum. Milk is supplied by the spoutI from the 111ilk-feetling chamber J. To the spindle Eis attached thegearing described in the specification of my Patent No. 409,984, A. D.1889, by which the drum is caused torotate very rapidly. As the milkpasses into the cup F the centrifugal force due to the rapid rotation ofthe cup causes the milk to rise up the side of the cup to the top and topress against the flange G. The holes H will thus be kept completelycovered with a body of milk in the cup, and solid streams of milk willbe forced. through them into the upper part of theseparatingdrumwithoutanyairbeingallowed to pass with the milk. Thecentrifugal action of the separating-drum causes the milk escaping intoit th rough the holes H to moverapidly toward the lower part, which isthe part of greatest diameter, and therefore the part moving with thegreatest velocity. Inpassing downward the milk and cream becomeseparated, the

cream coining inward toward the center andthe skim milk going outwardtoward the largest diameter. The cream and milk which hate" beenseparated from one another are made to flow in different directions, soas to escape from the drum for collection in the manner now to bedescribed. The interior of the drum is fitted with one or more vanes K,

whichproject radially from the conical-side of the drum toward itscenter. One of these vanes is shown in section at Fig.3. Each of thesevanes is provided at its inner edge with a channel L, which is slightlyinclined, so that the lower part is rather nearer the axis of theseparating-drumthan its upper part. There is a small space M between thelower part of each channel L and the diaphragm 0. Through this space thefloating cream passes to the bottom of the channel and by centrifugalaction passes up the channel and escapes through the hole N into theannular collecting-chamber 0, from. which it is drawn oil by the spoutI.

The milk from which the cream has been l Martina-w 554 chamber '1.

emcee separated and collected, ashereinbefore de scribed, passes througha series of small holes which are provided at short intervals all aroundthe periphery of the diaphragm O, in continuous streams into the lowerpart of the drum R, from which it escapes over the lip of the inclinedsurface S into the collecting- The milk may be taken from this chamberby being allowed to flow over its lip U into the annular receptacle Vand drawnott by the spout W, or it may be caused by centrifugal actionto pass into a collectingpipe X, by which the milk may be conveyed to areceiver placed at any convenient dis- .tance. The pipe X is arranged sothat the milk can be drawn away by either of these methods. When it isdesired to draw away the milk by meansof the pipe in the position shownin full lines; but when it isdesired to draw oft the milk by the spout Wthe nozzle of the pipe is brought nearer the axisof the centrifugalmachine either by sliding it into the position shown by dotted lines orby turning the nozzle around. The nozzle is thus taken o'utot the larreceptacle V.

1-, The combination, with a cbllectin'g-ohamber, of a separating-drumhaving a vane projecting radially from the side thereof toward thecenter and formed atuts inner edge with a slightlydnclined channelextending up- 'wardly'and. with a hole extending from the and throughthe wall of the through the vane drum, the lighter fiuid'by centrifugalaction being caused to pass up the-channeland through the hole into thecollecting-chamber, substantially as described.

2. The combination, with a collecting-chamber, of a separa'tingdrurnhaving avane-proj ectihg radially from the side thereof toward thecenter, formed at its inner edge with an upwardly-extending channel,leaving asmall space at the lower part of the latter, and with a holeextending from thehpper part of the channel through ,the vane andthrough the wall of the drum, the lighterfluid by centrifugalac'tionbeing caused to pass up the chanu'pper part of the channel nel andthrough the hole into the collecting chamber, substantially asdescribed.

3. The combination, with a collecting-chamber, of the separating-drumhaving an upper part of conical shape, a diaphragm dividing the druminto two compartments having a series of small holes and a "aneprojecting radially from the side of the drum toward the center thereof,formed X, this pipe is.

milk, which isallowed to flow ovor'thelip U into the annm from the upperaround the periphery, I

with an upwardly-extending channel, leaving a small space at the lowerpart of the latter, and with a hole extending from the upper part of thechannel through the vane and through the wall of the drum, substantiallyas described.

l. The combination of the upper collecting chamber for the lighterlectingchamber for the heavier fluid, the drum having an upper part ofconical'shape, a lower part-having an inclined surface provided with adischarge-lip, a diaphragm dividing the drum into two compartmentshaving a series of small holes around the periphery, and a vaneprojecting radially from the side of thedrum toward the center thereof,formed at its inner edge with an upwardly'extending channel, leaving asmall space at the lower part of the latter, and with a hole extendingtromthe upper part of the channel through the vane and through thewallet the drum, substantially as described.

at its inner edge The combination of the uppercollectingvided with adisctiarge-li p, a diaphragm dividing the drum into two compartmentshaving a series of small holes around the periphery, a vane projectingradially from the side of the drum toward the center thereof, formed atits inner edge with an upwardly-extending channel, leaving a small spaceat the lower part of the latter, and with a hole extending partof thechannel through the vane and through the wall of the drum, and thesliding collecting-pipe, substantially as described.

6. The combination, withacollectingohamber, of a separating-drum havingavane projectin'g radially from the side thereof toward the center, andformed at its in er, edge with an upwardly-extending channel and with ahole extending from the upper part of the channel through the vane andthrough the wall of the drum, and the receiving-cup having aninwardly-projecting thereof, and a row of holes inthe side of the cup ata short distance from the top, substantially as described.

flange at the top In witness whereof .I have hereunto set my hand inthepresence of two witnesses.

JOHN LAIDLAW. Witnesses:

W. BOTTOMLEY,

ARTHUR HART EY JUILE, 1 Both of 154 St. Vincent Street, Glasgow.

